Presentation on theme: "Aspect Training Berlin September 2005"— Presentation transcript:
1Aspect Training Berlin September 2005 A little historyThe Turbosound PhilosophyWhy not a line array?The DesignersTA-880 v’s TA-890TA-890H Training SessionsSuccess StoriesThe Shadows TourSoundworksRoskildeThe engineers view……
12Advantages Extends use of paper cone transducers up to 8kHz Very high efficiency: 111dB, 1W at 1mHF driver under very little stressPoint and shoot aimingHi-Fi sound to all seatsNegligible distortion
13Flashlight System Virtual point source Elegant, safe flying Ideal truck packIntegrated systemSmallest, lightest
14What was wrong with Flashlight? Poor horizontal consistencyDated rigging and trucking systemToo many enclosures required for coverageToo big and heavy
15Why Virtual Point Source? Line arrayVPS2D system designHorizontal changes with Frequency and lengthMotor and point intensivePoor ground stackingNot Scalable – several types of line array size needed with point source fillsPower hungryOutput Doubles with distance3D system designDispersion tailored to suit venueGood stacked or flownScalable – 1 box does allExtra efficiency through horn loading allows minimal power requirementsListener only hears 1 hi mid and hi cabinet at a time
16Why not a line array? Over crowded market place Fixed dispersion reduces flexibilityA single box is not capable of doing 200 people or 50,000Line array effect is rarely relevant accept in a large arrayPotential Site line issues with large arraysSystem advantages are little to do with acoustics
17Some typical issues with using Line arrays Opening angles on lower enclosures has no effect on the dispersion of the systemDespite theory, practical designs do not double with distanceAttenuating the middle of the array has little or no effect on directionality of system
21Does this mean line array is terrible? Line array is like any tool in an engineers toolboxUse it when it’s dispersion and packaging is correctUse them for what they were designed for, 1 per side will not work!When these don’t fit the venue use a point source box
23Successful products are usually the result of teamwork…….. Aspect – Guru’sDanny Cooklin –Chief project engineer AspectMid range drivers unitFlying HardwareLaurence Dickie –Mr. PolyhornHF Drive UnitsJon Crawley –Everything below 400Hz!TA-880 Chief EngineerJohn Constable –Mechanical engineerFlying hardwareDan Orton –Amplifier RacksSDA –Prediction SoftwareSuccessful products are usually the result of teamwork……..
24TA-880 v’s TA-890 TA-880 system TA-890 system Small ground stack regional touring companiesInstallationsCost effective flying and transportTA-890 systemMedium to large format touring companiesTheatre to arena toursDesigned for quick flying and trucking
25TA-880H 3 way active 140dB continuous 146dB peak Arrays at a real 25 in the horizontalBetween 4 and 15 in the verticalTrap angle set for close packing
26TA-880 Series Aimed at small rental companies and installations Maximum suggested system for rental 24 x TA-880HSimple cost effective flying for up to 3 deepWheels available for TA-880LWheel boards for TA-880H
28TA-880H - Simple flying Swords and pins to connect cabinets Choked chains to connect boxes to barsRear Biscuit to hold cabinets togetherFixed 2 wide and 3 wide flybarsTilt Strap for kelping
29TA-890H 3 way active 140dB continuous 146dB peak Arrays at a real 25 in the horizontalBetween 4 and 15 in the verticalRotatable hornflareA system and B system integrated flying/stackingExtremely small packageShips with single wheel board76KGSA systemB system
30TA-890L 1200 w RMS 136 dB Couples for additional output Extremely small footprintIntegrated A system hardware for stackingShips with wheel board FOC60KGS
31TSW-218 Super sub for use below 100Hz Works best with 4 or more for low frequency extensionRecommended as a 5th way for TA890 users when requiredCan be used in a 4 way system
32TA-890 Series Aimed at professional concert touring companies Capable of 400 – 500,000 with just 2 enclosure typesMultiple flying optionsFull range of accessories available
33Aspect TA-890 training seminar Level 1 engineers –Trained by TurbosoundToured to Level 2 standardSigned off to Level 1 by Turbosound or a qualified Level 1 trainerLevel 2 engineers –Trained to Level 3 by TurbosoundWorking with Aspect on the road with a level 1 engineer or TurbosoundLevel 3 engineers –Todays training!
35Acoustics Polyhorn theory Lo mid coupling and dispersion 2 x 15” performance2 x 18” performanceLo end directivity4 way v’s 5 wayPicking array widthUsing EASE FOCUS
36CD Horn properties LF HF LF Directivity given by horn width HF Wavelength too short to provide pattern control – horn beamingPhase is not uniformLFHF
372 CD Horns Arrayed Holes in HF due to beaming Destructive interference Poor horizontal consistency
38The polyhorn Made up of multi tapered waveguides All equal path length High frequency directivity provided by hornletsLow frequency control by size of overall horn mouth
39The polyhornHornlets curved to provide array angle of 25 degrees in horizontalConstructive interferenceHorizontal consistency close to line array
40The dome 50mm dome tweeter Takes compression from polyhorn First break up at 18kHZVery low distortionExtremely powerful neo magnet – 2,1 tessla at the gap
4110” Himid Spun Aluminium bowl for strength Neo magnet for weight and increased magnetic field114dB 1w 1m on the polyhorn400-4kHz no x-over in the vocal rangeMounted on phase bung and poly horn for phase coherent wavefrontCustom Turbosound design
42Polyhorn v’s CD horn Very low distortion Horn reflections gone in 1ms No visible break-upNo smearing
43LMF 2 x 10” DeviceRear facing to ensure maximum air movement for coolingHeatsink Assembly over Neo Magnet for coolingPowerful Neo Magnet structure107dB 1w/1m when loadedCustom to TurbosoundRising response
44Lo mid coupling 1 box naturally rises from 100Hz -400Hz As enclosures are flown deeply more low end can be heardNo need for DSP processing- use the band gain and your earsDepending on horn rotation and width low mid response will clover leaf at Hz
482 x 15” stackingStacking narrow but high provides wide horizontal and limited vertical150Hz should be pulled out of band in quantities over 8 due to 100Hz couplingFor the US market we suggest 1 x 18” to 1 x 15” in a 5 way system
492 x 18” stacking Works best in quantities of 3 or higher per side Should always be stacked to extend the horn for low frequency coupling of 4.5dB4 units has a sensitivity of 1w 1m
50Bass arraying Long thin stacks cause beaming from ¼ of a wavelength Log spacing causes smooth coverage but may clover leafBe careful of beaming low end, it may well be just as loud behind as in front!
51How wide do I go? Aspect arrays in 25 degree horizontal segments Most theatre gigs require 2 wide with infillArena’s are 4 or 5 wideTurn off boxes that are pointing at hard surfacesUse a protractor and a plan!
52EASE Focus / Turbosound Gigmate Turbosound in partnership with SDAProvide accurate acoustical prediction software for the Aspect SeriesInitially in the vertical with further updates to follow
53Gigmate- Setting up the room Gigmate - Project FilesSaving and opening project filesAdding appropriate informationGigmate- Setting up the roomAdding/Removing an audience areaSetting up audience area’s
54Gigmate - System setup Pick the correct flybars Select the number of enclosures neededInserting TA-890LGround-stackingThe acoustic compensator!!
55Gigmate - Prediction SPL Mapping Frequency selection Weighting/Max SPL optionsGraph OptionsRelation to the real worldWhat you should be trying to achieve
56Using the flying calculator Enter angles information from GigmateSelect narrow or wide pick up points on fly-barsConfirm motor requirementsGO!
57Roskilde 1kHz – 10kHzdownload from ftp.turbosound.com
58System packaging Flying and Stacking Amp racks4 way v’s 5 wayReturns systemTruckingFlying and StackingA System flyingA System stackingRotating the hornB System stacking
59AMP-890 Complete Turbosound solution OEM’d MC2 amplifiers Patchable between 4 way and 5 way operationBased on proven Flashlight DesignMono/Stereo operation by internal jumperAvailable as a kit or as a complete rack
604 way or 5 wayMost theatre work and small work should be run 4 way with the 2 x 15”Dance work can be run 4 way with either bin but may require a large number of 2 x 15”Arena touring and large outdoor events should be run 5 wayAmplifier racks make this very simple
61Complete Returns system Based on 24 way Veam connector20 way used with spare linesA single stage send breaks into 4 x 5 way sendsProvides 20 way system or 16 way system with returns
62Truck Packs Loading methods Target Truck Width (in) Cab Dimension (mm) Pack Width(in)5 wide 3 highindividual dolly96478943 wide 4 high (5 high on individual dolly)4 high dolly or individual dolly997964 wide 4 high4 high dolly only57490.43 tipped 1 on end (2.4m in height)Individual dolly3 x x 79687.7
634 High WheelboardAllows trucking of 4 x TA-890H or L on a single wheel-board pre-flownCan be tipped to 26 degree’s when 3 highMust be kept flat when 4 high or use separate stabiliserWeighs up-to 310 KG’sMust have 4 people around when 4 high
64TA-890H B system Cabinet connects with small interlinks Internal captive biscuit holds cabinets apartChoked pick up chain connects cabinets to barTilt strap separates or kelps cabinetsHardware used for ground stacking
65TA-890 A system Completely integrated hardware Allows cabinets to be trucked pre flownAllows cabinets to be securely ground stacked up to 6 high without flying or ground support towersAllows cabinets to be flown 8 deep!Safety factor 13:1!!Simple to useRemovable for testing